Goodwill and Other Identifiable Intangible Assets (Carrying Amount of Goodwill) (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 4,470
Acquisitions	(20)
Currency	(247)
Ending Balance	4,243
Performance Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	3,442
Acquisitions	(4)
Currency	(218)
Ending Balance	3,228
Industrial Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	1,028
Acquisitions	(16)
Currency	(29)
Ending Balance	$ 1,015

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
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-Name Accounting Standards Codification
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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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